Split collar for shafts.



To @ZZ whom tm/ty 0071.007711:

t UNITED STATES Patented August 11, 1903,

PATENT OFFICE.

ROBERT W. SOOTT, OF PHILADELPHIA, AND LOUIS N. D. WILLIAMS, oF

y t ASHBOURNE, PENNSYLVANIA.

SPLIT COLLAR FOR SHAFTS.

SPECIFICATION forming part of Letters Patent No. 736,304, dated August 11, 1903.

Application led August 15,1902, Serial No. 119.757. TNc mortem `Be it known thatweRoBERT W; SCOTT, of Philadelphia, and LOUIS1 VN. D. WILLIAMS,

of Ashbourne, Montgomery county, Pennsylf Vania, both citizens of the United States, have invented certain Improvements in Split Collars for Shafts, of which the following is a specification. f

The object of our invention is to so construct a split collar for shafts that the Same `can be securely Vconfined to the shaft by lar secured thereon in accordance with our p t invention. Fig. 2 is a transverse section of t the Same. Fig. 3 is a side elevation of another form of collar embodyingI the invention, and Fig. 4 is a transverse Section of the same.

l represents the shaft, and 2 and 3 the two parts of the collar4 which is' to be secured thereon, the part 2 of said collar comprising a segment extending half -way around the Shaft and having projecting Wings 4, which Serve as guides for the other member 3of the collar, the latter consisting of a segmental block embracing the other half of the shaft and fitting snugly between the projecting wings 4 of the portion 2 of the collar, as Shown in Fig. 2. Diagonal openings are formed in the block 3 and in the wings 4,

these openings registering with each other when the segmental block 3is inserted and bears upon the shaft, and said openings being threaded for the reception of clampscrews 5, which bear upon the shaft l, as shown in Fig. 2, and therefore serve not only to secure the block 3 in position, but also to secure the entire collar firmly upon the shaft. In the present instance Wehave also shown an additional clamp-screw 6, adapted to a threaded opening in the portion 2 of the collar, so as to provide equidistant points of bearing upon the shaftybut this additional clamp-screw may bedispensed with, if desired. Y When the clamp-screws 5 are screwed hometheirouter ends are ush with or below the periphery of the `col1ar. Hence the latter presents no projections for contact with other bodies, and the collar can therefore, if desired, be caused to run within a suitable bearing With the same facility as a solid collar forged upon or otherwise secured to the shaft. By causing the clamp-screws 5 to engage with the threadsformed both in the block 3and Wings 4 an extended hold of the clamp-ScreWs uponthese parts and a consequent firm gripping of the shaft is insured, and there is less tendency of the Wings 4 to spring than there Would be if the clampscrews Were adapted to threaded Open` ings in these wings only. In some cases, however, only the openings in the block 3 need be threaded. The block 3 is readily removable from the shaft in a radial direction. Hence the collar can be applied to or removed from a shaft ina contracted Space between pulleys, bearings, or other obstructions which would not permit ofa fitting of the parts of the collar together by a longitudinal movement'. Both of the clamp-screws 5 bear upon the same side of the shaft, so that the tendency of said screws is to press the otherside of the Shaft firmly against its seat in the main portion 2 of the collar.

` In order to relievethe clainp-screws 5 from lateral pressure, the sides Of the block 3 and the corresponding faces of the wings 4 are undercut, so as to present oppositely-inclined contact-faces, as shown in Fig. l, so that any lateral movement of the block is resisted by these contact-faces. Only one face of the block` 3 and one of the Wings may be undercut, if desired. The outer ends of the clampscrews may, if desired, be squared for the action of a'wrench, as shown in Figs.. 3 and 4, the wings 4 being recessed, as at 12, for the reception of the Wrench. In this case the curving or bevelin'g of the wings and `block3 are preferably the reverse of that shown in.l Fig. l, so as to provide the proper length of threaded opening in thesaid Wings 4. Having thus described our invention, We claim and desire to secure by Letters Patentt 1. The combination ina split collar for shafts, of a portion-partially encircling the shaft and having projecting Wings, a block SSII IOO

l moved radially from the shaft, each wing and the portion of the block engaging the same having threaded openings registering with each other, and clamp-screws adapted to said threaded openings and both bearing upon the same side of the shaft, substantially as speci- 2. A split collar for shafts comprising a segmental portion partially embracing the shaft and having projecting wings, a segmental block fitting between said wings and radially removable from the shaft, and diagonal clamp-screws passing through openings in the block and in the wings and bearing upon the shaft, substantially as specified.

3. A split collar for shafts comprising a portion partially embracing the shaft and having projecting wings, a block fitting between said wings and clamp-screws passing through said block and wings and bearing upon the shaft, the joint, or joints between the block and wings being undercut so as to resist movement of one portion of the collar axis ofthe shaft, said block and wings havy ing threaded openings registering with each other and clamp-screws adapted to said openings and bearing upon the shaft, substantially as specified.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

ROBERT W. SCOTT. LOUIS N. D. WILLIAMS.

Witnesses:

F. E. BEoHToLD, Jos. H. KLEIN. 

